论文信息 - Experiments and Analysis of LCC's two QA Systems over TREC 2004

Experiments and Analysis of LCC's two QA Systems over TREC 2004

In 2004, LCC has participated to TREC QA with two systems; PowerAnswer 2 and PALANTIR. The goal was to study the contribution of new features such as: (1) an improved passage retrieval module based on the Lucene IR system, (2) multiple QA strategies with voting across strategies, (3) the use of text semantic relations, (4) a new method for extracting lexical chains, (5) new logic prover reasoning strategies, (6) anaphora and ellipsis resolution, (7) indexing based on named entities, (8) question similarity analysis, and others. The paper presents the architectures of these two systems, an error analysis, and summary of results.

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